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# -*- coding: utf-8 -*-
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# Copyright 2010 - 2017 RhodeCode GmbH and the AppEnlight project authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import copy
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import hashlib
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import inspect
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from dogpile.cache import make_region
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from dogpile.cache.util import compat
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regions = None
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def key_mangler(key):
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return "appenlight:dogpile:{}".format(key)
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def hashgen(namespace, fn, to_str=compat.string_type):
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"""Return a function that generates a string
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key, based on a given function as well as
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arguments to the returned function itself.
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This is used by :meth:`.CacheRegion.cache_on_arguments`
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to generate a cache key from a decorated function.
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It can be replaced using the ``function_key_generator``
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argument passed to :func:`.make_region`.
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"""
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if namespace is None:
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namespace = "%s:%s" % (fn.__module__, fn.__name__)
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else:
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namespace = "%s:%s|%s" % (fn.__module__, fn.__name__, namespace)
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args = inspect.getargspec(fn)
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has_self = args[0] and args[0][0] in ("self", "cls")
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def generate_key(*args, **kw):
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if kw:
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raise ValueError(
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"dogpile.cache's default key creation "
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"function does not accept keyword arguments."
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)
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if has_self:
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args = args[1:]
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return (
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namespace
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+ "|"
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+ hashlib.sha1(" ".join(map(to_str, args)).encode("utf8")).hexdigest()
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)
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return generate_key
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class CacheRegions(object):
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def __init__(self, settings):
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config_redis = {"arguments": settings}
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self.redis_min_1 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure(
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"dogpile.cache.redis", expiration_time=60, **copy.deepcopy(config_redis)
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)
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self.redis_min_5 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure(
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"dogpile.cache.redis", expiration_time=300, **copy.deepcopy(config_redis)
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)
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self.redis_min_10 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure(
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"dogpile.cache.redis", expiration_time=60, **copy.deepcopy(config_redis)
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)
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self.redis_min_60 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure(
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"dogpile.cache.redis", expiration_time=3600, **copy.deepcopy(config_redis)
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)
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self.redis_sec_1 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure(
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"dogpile.cache.redis", expiration_time=1, **copy.deepcopy(config_redis)
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)
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self.redis_sec_5 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure(
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"dogpile.cache.redis", expiration_time=5, **copy.deepcopy(config_redis)
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)
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self.redis_sec_30 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure(
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"dogpile.cache.redis", expiration_time=30, **copy.deepcopy(config_redis)
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)
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self.redis_day_1 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure(
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"dogpile.cache.redis", expiration_time=86400, **copy.deepcopy(config_redis)
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)
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self.redis_day_7 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure(
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"dogpile.cache.redis",
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expiration_time=86400 * 7,
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**copy.deepcopy(config_redis)
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)
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self.redis_day_30 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure(
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"dogpile.cache.redis",
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expiration_time=86400 * 30,
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**copy.deepcopy(config_redis)
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)
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self.memory_day_1 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure(
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"dogpile.cache.memory", expiration_time=86400, **copy.deepcopy(config_redis)
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)
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self.memory_sec_1 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure("dogpile.cache.memory", expiration_time=1)
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self.memory_sec_5 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure("dogpile.cache.memory", expiration_time=5)
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self.memory_min_1 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure("dogpile.cache.memory", expiration_time=60)
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self.memory_min_5 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure("dogpile.cache.memory", expiration_time=300)
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self.memory_min_10 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure("dogpile.cache.memory", expiration_time=600)
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self.memory_min_60 = make_region(
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function_key_generator=hashgen, key_mangler=key_mangler
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).configure("dogpile.cache.memory", expiration_time=3600)
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def get_region(region):
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return getattr(regions, region)
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